When was Wibaux County founded?

Wibaux County was founded in 1914, formed from Dawson County, Fallon County and Richland County, and named after Pierre Wibaux.

What is the county seat of Wibaux County?

The county seat of Wibaux County is Wibaux.

Is there an online parcel map for Wibaux County?

Yes. Montana State Library (Montana Cadastral Framework; data from MT Dept of Revenue ORION and five counties) publishes a parcel map of 2,238 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.

Has Wibaux County's boundary or name changed?

Wibaux County was created in 1914 from Dawson County, Fallon County and Richland County. Since then the Atlas of Historical County Boundaries records 3 later changes, most of them small boundary adjustments, chiefly involving Dawson County, Fallon County and Prairie County.

Is my lot in a flood zone?

We do not have flood maps for Wibaux County yet. Look up the address on FEMA's Flood Map Service Center, which shows the effective flood map for any lot.

County · code 30109

Wibaux CountyMontana

Wibaux County is a county in Montana with its seat in the town of Wibaux. It was created on August 17, 1914, from parts of Dawson and Fallon counties and named after Pierre Wibaux.

Founded1914
County seatWibaux
Named forPierre Wibaux
Land area890 sq mi + 0.7 sq mi water
Population937 2020 Census
Parcels mapped2,238 checked 16 October 2026

Open the free map Click any parcel in Wibaux County: acreage, parcel id, address and who publishes the map. No sign-in.

Updated 19 October 2026

Census outline · seat marked

History

Formed in 1914 from Dawson County, Fallon County and Richland County

An old deed may name a county that no longer exists, or a boundary that has since moved.

Wibaux County was created by petition and election from Dawson and Fallon counties, though it initially overlapped territory claimed by Richland County. The boundary dispute with Richland County was settled on February 19, 1915, and the county gained small areas from Dawson and Prairie counties in March 1917 when boundaries were adjusted to run on federal land survey lines.

Boundary changes from the Newberry Library, Atlas of Historical County Boundaries.

1914
Wibaux County created Wibaux created by petition and election from Dawson and Fallon. Wibaux overlapped territory claimed by Richland, placing the area in dispute.
from Dawson from Fallon from Richland
17 August 1914 · Minutes of Board of County Commissioners, Dawson County, 15 August 1914; Burlingame, 17-19
1915
Changed Boundary between Wibaux and Richland was defined, settling boundary dispute dating from 17 August 1914.
Richland
19 February 1915 · Mont. Laws 1915, 14th leg., ch 24/pp. 32-33
1917
Gained territory Wibaux gained small areas from Dawson and Prairie when boundary was adjusted to run on federal land survey lines.
from Dawson from Prairie
9 March 1917 · Mont. Laws 1917, 15th leg., ch. 139/pp. 232-235
1919
Exchanged territory Wibaux exchanged with Fallon.
with Fallon
10 March 1919 · Mont. Laws 1919, 16th leg., ch. 185/pp. 351-352

Land and parcels

What the maps cover in Wibaux

Who publishes each layer, how good it is, and when we last checked.

Parcels Good enough

Lot lines and tax-map numbers for 2,238 parcels from Montana State Library (Montana Cadastral Framework; data from MT Dept of Revenue ORION and five counties). Drawn for tax purposes: usually within a few feet of a survey, but not a survey.
edited 13 October 2026 · checked 16 October 2026
Address points Official

One point per address, 797 in all from Montana State Library.
edited 13 October 2026 · checked 14 October 2026
Buildings Reference

Roof outlines traced from aerial imagery from FEMA Response Geospatial Office with Oak Ridge National Laboratory (ORNL). Good for seeing what is on a lot; not accurate enough to set a fence from.
checked 18 October 2026

Official: from the office that keeps the record
Good enough: a reliable statewide or national copy
Fallback: a guide only; check the official record
Missing: nothing public found yet

People and land

Wibaux by the Census

Population

937 2020 Census count

Housing units

518 2020 Census count

Land area

890 square miles

Water area

0.7 square miles

People per sq mi

1 population ÷ land area

Source: US Census Bureau, 2020 Census; US Census Bureau, 2020 Gazetteer Files. Not endorsed or certified by the Census Bureau.

Rules and offices

Wibaux County's official site

We have found the county's site but not its offices yet; start there.

County government

County government
The official website of Wibaux County.
wibauxcounty.com

See your own lot on these maps

Open Wibaux County on Parcel Chart's free map and click your parcel. Save it with a free account; the full record of your place (site map, projects, documents) is Pro, in early access.

Open the free map no sign-in Pro early access

Questions

Common questions about Wibaux County

When was Wibaux County founded?: Wibaux County was founded in 1914, formed from Dawson County, Fallon County and Richland County, and named after Pierre Wibaux.
What is the county seat of Wibaux County?: The county seat of Wibaux County is Wibaux.
Is there an online parcel map for Wibaux County?: Yes. Montana State Library (Montana Cadastral Framework; data from MT Dept of Revenue ORION and five counties) publishes a parcel map of 2,238 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
Has Wibaux County's boundary or name changed?: Wibaux County was created in 1914 from Dawson County, Fallon County and Richland County. Since then the Atlas of Historical County Boundaries records 3 later changes, most of them small boundary adjustments, chiefly involving Dawson County, Fallon County and Prairie County.
Is my lot in a flood zone?: We do not have flood maps for Wibaux County yet. Look up the address on FEMA's Flood Map Service Center, which shows the effective flood map for any lot.

Nearby